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Linux Advisory Watch: January 20th 2006
Source: LinuxSecurity.com Contributors - Posted by Benjamin D. Thomas
This week, advisories were released for httpd, mod_auth_pgsql, auth_ldap, ethereal,
struts, cups, gpdf, apache, and the kernel. The distributor for this week is
Red Hat.
The NSA has designated Norwich University a center of Academic Excellence
in Information Security. Our program offers unparalleled Infosec management
education and the case study affords you unmatched consulting experience.
Using interactive e-Learning technology, you can earn this esteemed degree,
without disrupting your career or home life.
IPv6 approach for TCP SYN Flood attack over VoIP, Part V By: Suhas Desai
In this paper, we describe and analyze a network based DoS at¬tack for IP based networks. It is known as SYN flooding. It works by an attacker sending many TCP connection re¬quests with spoofed source addresses to a victim's machine. Each request causes the targeted host to instantiate data structures out of a limited pool of resources to deny further legitimate access.
7.2 Mix real VoIP calls (H.323 & SIP) over integrated DHCP, IPSec,
PPPoE and 802.1 xs
Realistic testing, faster set-up, no need for scripting
7.3Integrated IPv6, IPsecv6, VLAN, and SNMP support -Rapidly test
next-generation dual-stack devices and Stress the management plane
at the same time
7.4 Create a realistic mix of application traffic with H.323, SIP,
RTSP, SNMP, messaging on each test interface, DoS. /spam /virus
attacks with over 150 measurements.
8. Conclusion
This paper has described and analyzed a network based denial of
service attack, called SYN flooding. It has contributed a detailed
analysis for practical approach to application Performance validation
for VoIP application with IPv6/IPv4 configurations and TCP SYN
Flooding attacks over connection oriented networks.
To protect from DoS attacks for secure, scalable, high-availability
IPV6 services over VoIP performance above methods proven better results.
It has proved working also for spam and virus attacks over TCP
connections with network tester methods of MoonV6.
9. Acknowledgement
We would like to thank Zlata Trhulj for design documentation of IPv6
services and Network tester methods presented at North American IPv6
Coalition Meeting-Reston, VA, 25 May, 2005.
EnGarde
Secure Community 3.0.3 Released - Guardian Digital is happy to announce
the release of EnGarde Secure Community 3.0.3 (Version 3.0, Release 3). This
release includes several bug fixes and feature enhancements to the Guardian
Digital WebTool, the SELinux policy, and the LiveCD environment.
Linux File
& Directory Permissions Mistakes - One common mistake Linux administrators
make is having file and directory permissions that are far too liberal and
allow access beyond that which is needed for proper system operations. A full
explanation of unix file permissions is beyond the scope of this article,
so I'll assume you are familiar with the usage of such tools as chmod, chown,
and chgrp. If you'd like a refresher, one is available right here on linuxsecurity.com.
Introduction:
Buffer Overflow Vulnerabilities - Buffer overflows are a leading type
of security vulnerability. This paper explains what a buffer overflow is,
how it can be exploited, and what countermeasures can be taken to prevent
the use of buffer overflow vulnerabilities.
Take advantage of our Linux Security discussion
list! This mailing list is for general security-related questions and comments.
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with "subscribe" as the subject.
Thank you for reading the LinuxSecurity.com
weekly security newsletter. The purpose of this document is to provide our readers
with a quick summary of each week's most relevant Linux security headline.
Red
Hat
RedHat: Moderate: httpd security update
17th, January, 2006
Updated Apache httpd packages that correct three security issues
are now available for Red Hat Enterprise Linux 3 and 4. This update has
been rated as having moderate security impact by the Red Hat Security
Response Team.
http://www.linuxsecurity.com/content/view/121220
RedHat: Critical: mod_auth_pgsql security
update
17th, January, 2006
Updated mod_auth_pgsql packages that fix format string security
issues are now available for Red Hat Enterprise Linux 3 and 4. This update
has been rated as having critical security impact by the Red Hat Security
Response Team.
An updated auth_ldap packages that fixes a format string security
issue is now available for Red Hat Enterprise Linux 2.1. This update has
been rated as having critical security impact by the Red Hat Security
Response Team.
Updated Ethereal packages that fix various security vulnerabilities
are now available. This update has been rated as having moderate security
impact by the Red Hat Security Response Team.
RedHat: Low: struts security update for
Red Hat Application Server
17th, January, 2006
Updated Red Hat Application Server components are now available
including a security update for Struts. This update has been rated as
having low security impact by the Red Hat Security Response Team.
Updated CUPS packages that fix multiple security issues are
now available for Red Hat Enterprise Linux. This update has been rated
as having important security impact by the Red Hat Security Response Team.
An updated gpdf package that fixes several security issues is
now available for Red Hat Enterprise Linux 4. This update has been rated
as having important security impact by the Red Hat Security Response Team.
Updated Apache httpd packages that correct a security issue
are now available for Red Hat Enterprise Linux 2.1. This update has been
rated as having moderate security impact by the Red Hat Security Response
Team.
Updated kernel packages that fix several security issues in
the Red Hat Enterprise Linux 4 kernel are now available. This security
advisory has been rated as having important security impact by the Red
Hat Security Response Team.
